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Keywords = static press-in piling machine

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16 pages, 9336 KB  
Article
Model Tests on Jacked Pile Penetration Characteristics Considering a Static Press-in Piling Machine
by Yinan Li, Rongyue Zheng and Yuebao Deng
Appl. Sci. 2024, 14(5), 1985; https://doi.org/10.3390/app14051985 - 28 Feb 2024
Cited by 2 | Viewed by 2381
Abstract
This study incorporates a static press-in piling machine into the conventional laboratory model tests for jacked piles. By conducting a comparative analysis between two tests, one involving the static press-in piling machine and the other focusing solely on pile jacking, this study aims [...] Read more.
This study incorporates a static press-in piling machine into the conventional laboratory model tests for jacked piles. By conducting a comparative analysis between two tests, one involving the static press-in piling machine and the other focusing solely on pile jacking, this study aims to unveil the variations in penetration characteristics with pile sinking depth during the process of pile jacking under the constraint imposed by the static press-in piling machine. When considering the impact of the piling machine, the pile pressing force, pile sinking resistance, pile axial force, and unit side friction resistance of the pile body are higher compared to test results that only focus on pile jacking. There is an acceleration in the total side friction resistance within the depth range of 20 to 30 cm. Additionally, the reduction rate of axial force during the entire pile jacking process is 2% higher, with a general reduction in the “side resistance degradation” phenomenon. The soil pressure around the pile exhibits an initial increase followed by a decrease. The authors believe that the model box test of the jacked pile, considering the pile machine, would be more aligned with engineering practice. Full article
(This article belongs to the Topic Pipeline and Underground Space Technology)
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